1. Following enhanced Sm spin projection in Gd$_x$Sm$_{1-x}$N
- Author
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Miller, J. D., McNulty, J. F., Ruck, B. J., Khalfioui, M. Al, Vézian, S., Suzuki, M., Osawa, H., Kawamura, N., and Trodahl, H. J.
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Condensed Matter - Materials Science - Abstract
The rare-earth nitrides form a series of structurally simple $intrinsic$ ferromagnetic semiconductors, a rare class of both fundamental interest and application potential. Within the series there is a wide range of magnetic properties relating to the spin/orbit contributions to the ferromagnetic ground states. We report an x-ray magnetic circular dichroism investigation of the spin/orbit magnetic dipole alignments of Sm and Gd ions in epitaxial Gd$_x$Sm$_{1-x}$N films. The Sm spin-alignment expectation value $\langle S_{z} \rangle$ is seen to be strengthened by the Gd/Sm exchange interaction, providing guidance concerning the composition for an angular momentum compensation point (where the volume-averaged total angular momentum of a film is zero)., Comment: 7 Pages, 7 Figures. Submitted to Phys. Rev. B
- Published
- 2022
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